The forum is caching outdated data. How do I clear it? I'm not talking about the admin functions below the forum.
Are you using a caching PLUGIN? If so, exclude wpforo page.
Then exclude wpforo page (the one with the shortcode). No caching plugin is compatible with wpForo.
No matter what their developers claim. wpForo is "too dynanic" to be cached with static pages, not to mention that wpForo doesn’t use custom post types (so it is "unknown" to caching plugins).
I month ago i wanted to switch to a caching plugin more updated to the Comet Cache we were using (some admin had it installed a few years back).
When i tried Fastest Cache (with wpForo excluded and no caching for logged in) i got several complains that users were logged in and were shown unlogged after a while. Some session issue. Who knows why. Maybe related to wpForo maybe not. It may be related to my installation but i saw others reporting that also in their forums at Wordpress . org.
So i didn't use that caching plugin. Just a notice to you.